The WDG class covers diesel locomotives built for heavy freight work on Indian Railways, and their horns have become instantly recognisable to railfans across India. Recordings like this one circulate through train-spotting videos, railway enthusiast channels and travel vlogs, where the horn marks an arrival, a departure or a level crossing. Because the sound is so closely tied to long-distance freight and passenger routes, editors keep using it to ground a scene in India without needing any narration or on-screen text.